Or as an alternative keep the first setup (which in my opinion is the better but let the devs decide) with 2 people and 3 lines each, at the end of each week players get the standard 1 loco and then a choice of getting 2 upgrades for their own lines OR getting 1 upgrade and raising the number of passengers on BOTH lines by say 10% to try and knock out the other person. This means that the games will be longer as players will only raise ridership when they think they can cope with it. If both players choose the passenger hike then they both get 1 upgrade but the ridership only goes up 10%

These both sound like they would be interesting methods of setting up a multiplayer game. The first one sounds a bit more turn based and is almost a slow race to the finish-line. The second could could almost have saved games that would have an overlay so you didn’t have to play right at the same time.

But to be clear, multiplayer isn’t something we’d be able to build into Mini Metro. Multiplayer a really complex feature requires a bunch of planning to build it into the core of the game, so we’re just not set up to support multiplayer at all. It’s neat to think about what a new/different version of the game could have looked like though!